Report Noxious Weeds

Report noxious weeds and get advice on control: contact –

Coos County EDRR Strike Team

Lucy Allison or

Goldie Warncke

or at 1-866-INVADER (1-866-468-2337).


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Departments > Board of Commissioners > County Boards and Committees > Weed Board

Coos County Noxious Weed Control District 


On May 7, 2008 during a routine public meeting, the Board of Commissioners discussed, deliberated and voted in favor of Order 08-05-048L, thus forming a Noxious Weed Control District pursuant to ORS 569.360, to cover all land and water within the boundaries of Coos County, and creating a district board (Noxious Weed District Advisory Board). 


The Coos County Noxious Weed Control Advisory Board (Advisory Board) serves at the pleasure of the Board of Commissioners.   The Advisory Board members shall serve as an advisory body with the authority to assist and advise the Board of Commissioners as to the following:  
Assisting the county in effective education, outreach, and treatment of noxious weeds;
Advocating for effective weed control programs;
Cooperating with local interest groups and state and federal agencies thereby promoting partnerships;
Assisting in accessing funding;
Reporting and making recommendations to the Coos County Board of Commissioners;
Assisting the county with identification of appropriate additions to and deletions from the Coos County Noxious Weed List.


Noxious weeds are prioritized into three categories:

“A” designated weed – a weed of known economic importance which occurs in the county in small enough infestations to make eradication/containment possible; or is not known to occur, but its presence in neighboring counties make future occurrence in Coos County seem imminent.

“B” designated weed – a weed of economic importance which is abundant in parts of the county, but which may have limited distribution in some areas. 

“T” designated weed – Species from either the A or B lists that is Targeted (T) to be the focus for prevention and control within the county. Actions against these species will be a priority. 

Coos County Noxious Weed List


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Weed of the Month

Garlic Mustard, Alliaria petiolate, an invasive non-native biennial herb that spreads by seed. 

How did it get here?

Introduced from Europe originally as a food plant. Although edible for people, it is not eaten by local wildlife or insects. In Oregon, north Willamette Valley is the epicenter of garlic mustard and our neighbors to the north- Lane and to the south-Curry (along the Rogue River), have known populations.

Why is it a problem?

Plant stands can produce more than 62,000 seeds per square meter, can out compete local flora and change the structure of plant communities on the forest floor. Making this species is a serious concern.

How to Identify?

Biennial or winter annual herb

Generally grows 2-3 (up to 6) feet tall

Rosettes mid summer – overwinters- then bolts the following spring

Basil leaves: dark green, kidney to scalloped shaped

Stem leaves: alternate, sharply toothed and triangular

Bloom time April – June

Flowers: showy four white petals

Distinct garlic odor when crushed

What to do? Dig-up small patches of plants before flowering but be sure to remove as much of the root as possible, fragments can easily resprout. However, hand pulling is impractical once garlic mustard is established. Or if you see this plant in our area, please contact Coos County EDRR!

Report noxious weeds and get advice on control: contact -Coos County EDRR Strike Team Lead-Lexi Snell at or at or at 1-866-INVADER (1-866-468-2337).